premailer

How does one integrate the ' premailer ' gem with a Rails (3.0.7) project? I currently have in my mailer: def welcome(user) @user = user mail to: user.email, subject: "Welcome" end But I can't figure out how to integrate the library. I need to call: premailer = Premailer.new(html) html = premailer.to_inline_css However, I'm not sure how to access the contents of my email from a mailer action. Try: def premailer(message) message.text_part.body = Premailer.new(message.text_part.body.to_s, with_html_string: true).to_plain_text message.html_part.body = Premailer.new(message.html_part.body.to_s,